diff options
Diffstat (limited to 'src/soc/intel/apollolake/chip.c')
| -rw-r--r-- | src/soc/intel/apollolake/chip.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/chip.c b/src/soc/intel/apollolake/chip.c index af145c0259..cac2f1134b 100644 --- a/src/soc/intel/apollolake/chip.c +++ b/src/soc/intel/apollolake/chip.c @@ -502,6 +502,17 @@ static void glk_fsp_silicon_init_params_cb( struct soc_intel_apollolake_config *cfg, FSP_S_CONFIG *silconfig) { silconfig->Gmm = 0; + + /* On Geminilake, we need to override the default FSP PCIe de-emphasis + * settings using the device tree settings. This is because PCIe + * de-emphasis is enabled by default and Thunderpeak PCIe WiFi detection + * requires de-emphasis disabled. If we make this change common to both + * Apollolake and Geminilake, then we need to add mainboard device tree + * de-emphasis settings of 1 to Apollolake systems. + */ + memcpy(silconfig->PcieRpSelectableDeemphasis, + cfg->pcie_rp_deemphasis_enable, + sizeof(silconfig->PcieRpSelectableDeemphasis)); } void __attribute__((weak)) mainboard_devtree_update(struct device *dev) |